Vendor
Cisco
3,442 known vulnerabilities.
Cisco at a glance
7 of the exploited vulnerabilities are known to be used by ransomware (CISA).
Show as table
| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 4 | 0 |
| Oct 2026 | 72 | 22 |
| Sep 2026 | 98 | 33 |
| Aug 2026 | 46 | 13 |
| Jul 2026 | 16 | 0 |
| Jun 2026 | 10 | 1 |
| May 2026 | 20 | 2 |
| Apr 2026 | 31 | 6 |
| Mar 2026 | 69 | 2 |
| Feb 2026 | 20 | 2 |
| Jan 2026 | 11 | 0 |
| Dec 2025 | 1 | 1 |
| Nov 2025 | 16 | 2 |
| Oct 2025 | 8 | 0 |
| Sep 2025 | 32 | 2 |
| Aug 2025 | 47 | 1 |
| Jul 2025 | 11 | 2 |
| Jun 2025 | 18 | 4 |
| May 2025 | 48 | 1 |
| Apr 2025 | 7 | 0 |
| Mar 2025 | 14 | 0 |
| Feb 2025 | 29 | 2 |
| Jan 2025 | 8 | 1 |
| Dec 2024 | 1 | 0 |
Most common weaknesses
Products
Latest advisories
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Critical max 10.0
Cisco ISE und ISE-PIC: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Cisco Identity Services Engine (ISE) und ISE-PIC ausnutzen, um beliebigen Code auszuführen – sogar mit Root-Rechten –, Sicherheitsmaßnahmen zu umgehen, Berechtigungen zu erweitern, SQL-Injection-Angriffe durchzufüh…
first Sep 16, 2026 -
Medium max 6.1WID-SEC-2026-4347 1 CVE
Cisco Unified Communications Manager (CUCM): Schwachstelle ermöglicht Cross-Site Scripting
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Unified Communications Manager (CUCM) ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.
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Medium max 5.3WID-SEC-2026-4350 1 CVE
Cisco Identity Services Engine (ISE): Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Identity Services Engine (ISE) ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
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Medium max 7.6WID-SEC-2026-4351 1 CVE
Cisco Unified Computing System (UCS): Schwachstelle ermöglicht Codeausführung
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Cisco Unified Computing System (UCS) ausnutzen, um beliebigen Programmcode auszuführen.
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High max 8.6
Kwetsbaarheid verholpen in Cisco Secure Firewall ASA en FTD Software
Cisco heeft een ernstige kwetsbaarheid verholpen in Cisco Secure Firewall Adaptive Security Appliance (ASA) en Cisco Secure Firewall Threat Defense (FTD).
3,442 results · Feed
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Medium 4.3
ISE Authorization Bypass vulnerability
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device. This vulnerability is due to the lack of server-side valida…
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Medium 6.1
Cisco Unified Communications Manager Cross-Site Scripting Vulnerability
A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct a cross-…
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Medium 5.3
Cisco Identity Services Engine Authorization Bypass Vulnerability
A vulnerability in the authorization mechanism of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an unauthenticated, remote attacker to obtain an endpoint identity certificate. This vulnerability is due to …
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High 7.6
Cisco Unified Computing System Central Remote Code Execution Vulnerability
A vulnerability in the web-based management interface of Cisco UCS Central Software could allow an authenticated, remote attacker to achieve remote code execution or conduct information disclosure attacks on an affected device. This vulnerability is due to in…
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High 8.6CVE-2026-76418 Exploited
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel Denial of Service Vulnerability
A vulnerability in the Remote Access SSL VPN service of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unex…
KEV Oct 29, 2026 -
Medium 6.6
Cisco Expressway Series Software Hardening Release: October 2026 - Insecure Temporary File Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address mul…
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High 7.5
Cisco IOS XR Software for ASR 9000 Series Routers IPv4 Unicast Packets Denial of Service Vulnerability
A vulnerability in the IPv4 packet processing functionality of Cisco IOS XR Software that affects Cisco ASR 9000 and 9900 Series Aggregation Services Routers as well as Cisco ASR 9902 and 9903 Compact High-Performance Routers could allow an unauthenticated, r…
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High 7.8
Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability
A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user. This vulnerability is due to a lack of authent…
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High 7.0
Cisco Expressway Series Software Hardening Release: October 2026 - Improper Link Resolution Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address mul…
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High 7.8
Cisco Expressway Series Software Hardening Release: October 2026 - Incorrect Permission Assignment Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address mul…
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High 7.8
Cisco Expressway Series Software Hardening Release: October 2026 - Code Injection Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address mul…
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High 7.5
Cisco Expressway Series Software Hardening Release: October 2026 - Uncaught Exception Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address mul…
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High 8.6
Cisco Expressway Series Software Hardening Release: October 2026 - Out-of-bounds Write Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address mul…
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Medium 5.8
Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability
Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection…
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High 7.5
Cisco Expressway Series Software Hardening Release: October 2026 - NULL Pointer Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address mul…
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High 7.5
Cisco Expressway Series Software Hardening Release: October 2026 - Denial of Service Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address mul…
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High 7.5
Cisco Unified Communications Products Hardening Release: October 2026 - Improper Check or Handling of Exceptional Conditions Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM …
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Medium 5.3
Cisco Unified Communications Manager Improper Access Control Vulnerability
A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct access control bypass attacks on an affected d…
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High 7.8
Cisco Unified Communications Products Hardening Release: October 2026 - Path Traversal Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM …
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High 8.8
Cisco Unified Communications Products Hardening Release: October 2026 - Improper Access Control Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM …
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High 8.8
Cisco Unified Communications Products Hardening Release: October 2026 - Improper Input Validation Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM …
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High 8.8
Cisco Unified Communications Products Hardening Release: October 2026 - Injection Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM …
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Critical 9.3
Cisco Unified Communications Products Hardening Release: October 2026 - Cross-site Scripting Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM …
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Critical 9.8
Cisco Unified Communications Products Hardening Release: October 2026 - Improper Authentication Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM …
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Medium 5.3
Multiple Cisco Products Snort 3 Denial of Service Vulnerability
Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the detection engine to unexpectedly restart, resulting in a denial of service (DoS) condition. The vulnerabi…
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Critical 9.8
Cisco Unified Communications Products Hardening Release: October 2026 - Improper control of a resource through its lifetime.
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM …
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Medium 5.3
Cisco Expressway Series Information Disclosure Vulnerability
A vulnerability in Cisco Expressway Series could allow an unauthenticated, remote attacker to obtain sensitive information from an affected device. This vulnerability is due to insufficient authorization checks of HTTP requests during Mobile and Remote Access…
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Medium 5.5
Cisco Secure Client Privilege Escalation Vulnerability
A vulnerability in the interprocess communication (IPC) channel of the Secure Firewall Posture module in Cisco Secure Client could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient va…
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Critical 9.8
Cisco Expressway Series Remote Code Execution Vulnerability
A vulnerability in the database service feature of Cisco Expressway Series could allow an unauthenticated, remote attacker with network access to a Cisco Expressway device to execute arbitrary operating system commands as root. This vulnerability is due …
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High 7.5
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that add…
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High 7.5
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that add…
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High 7.8
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that add…
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Medium 5.8
Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities
Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 …
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Medium 5.8
Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability
Multiple Cisco products are affected by a vulnerability in the Snort 3 Teredo Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulne…
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Medium 5.8
Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability
A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco products could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service …
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Critical 9.0
Multiple Cisco Products Snort 3 Software Hardening Release: October 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that add…
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Medium 5.8
Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities
Multiple Cisco products are affected by a vulnerability in the Snort 3 Generic Routing Encapsulation (GRE) Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of …
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Medium 5.8
Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities
Multiple Cisco products are affected by a vulnerability in the Snort 3 NetFlow Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vuln…
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Medium 5.8
Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability
Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of error checking when the MIME…
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Critical 9.8
Cisco Secure Email Gateway Arbitrary File Write Vulnerability
A vulnerability in the Advanced Malware Protection (AMP) feature of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system. This vulnerability is due to improper handling of email…
KEV Oct 14, 2026